Notepad++ is a free source code editor and Notepad replacement that supports several languages.
Haiku is an open-source operating system that specifically targets personal computing. Inspired by the BeOS, Haiku is fast, simple to use, easy to learn and yet very powerful.
PingInfoView is a small utility that allows you to easily ping multiple host names and IP addresses, and watch the result in one table.
Simple cross-platform text editor based on Qt and Scintilla.